Boring device.



No. 833,001. PATENTED OCT. 9, 1906.

J. PRESS.

BORING DEVICE.

APPLICATION FILED SEPT. 16, 1905.

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. m "hum! INVENTOH j; 77 7g r/&C&&ZTCJJ' I I B) ATTORNEYS i To all whom it may concern.-

indicating the depth of the hole.

- have, invented slons of the JACOB PRESS, OF NEW YORK, N. Y.

sonme'osv os.

7 Specification of Letters Patent.

Patented Oct. 9, 1906 Application filedseptember 16, 1905. Serial No. 278,73 8- Be it known that I, JACOB PRESS, a subject the Czar ofRu'ssia, and a resident of the city of New York,,borou h of Brookl n, in the countyof Kings'and tate of New ork, a new and Improved Boring Device, of which the following is a full, clear, and exact description.

The invention relates to a device for use in conjunction with an ordinary brace and bit to-enable the-operator to bore a hole at right angles with the surface of the object in which the hole is bored.

The invention resides'incertain special features of construction and novel combinations ofparts, which'will be fully set forth hereinafter and particularly pointed out in the claims.

' 0 Reference is to be'had to the accompanying drawings, which illustrate, as

an, example, the preferredform of my invention, and in which 1 Figure 1 is a side elevation of the inven tion. Fig. 2 is a sectional plan view on the line 2 2 of Fig. 1. Fi 3v is a'vertical section takenthrou h one o device andthrougha part of the base and a part of the cross member; and Fig. 4 is a sectional elevation on the line 4 4 of Fig. 1, particularly showing the gage for The Invention is adapted to be used in connection with a brace and bit of essentially ordinary construction, the same comprising a crank part a and a stock or chuck b. shown with one, or more projecting lugs f b at its lower end, and these lugs are adapted to act 1n conjunction withthe gage, as will be hereinafter described' The said stock or chuck is arranged to hold a bit 0 in the usual manner.

(1 indicates the base of the device, which is of flat plate-like form and has a )central opening d, through which the bit operates. Rigidly secured to the base if at each side of the opening (1 is a tubular standard e, and in these standards rods f are movable. Said rods have enlargements f at-their lower ends,

and the tubularstandards .e have contracted collars e at their upper ends, which are adapted to engage the enlargements to re-' vent. separation of the parts e and f. ach tubular standard e carries a s rin h, and,

these springs serve normally to f t e rods f the telescopic exten Fig.- 1, the stock is provided.

' 1s desire in the position shown in Fig. 3. The rods f 1 placement of the stock b with respect 'to the cross-piece t.

Secured to the which is graduated, which has a head Z desired position of the head on the gage-rod being maintained by a set-screw m. The head Zcarries the shank n of a'fork 0., and p indicates a set-screw operating in the head and adjustably holding said shank in place. The fork 0 is adapted to straddle the bit, as and be engaged by the as shown in Fig. 1, and

indicated in Fig. 1, ln s b of the stock 6.

, n the use of the invention the parts will be adjusted as shown and downwardpressure exerted on the brace at the same time that the instrument is rotated. This will cause I) has an annular base d is a gage-rod is,

adjustable thereon, the' the bit to engage the object in which the hole is to be formed, and the springs h will yield to ermit the rods f to move down into the tubuar standards 6, thus allowing the bitto work its .way into the wood. At the same time the base 61 bearing on the surface of the wood and the arrangement of the standards 6 perpendicularly to the base insures that the bit enters the wood at right angles to the plane on which. the base is resting. In this manner'a hole at right angles to the surface of the ,wood may be bored without the operator paying s ecial attention to this point. If it to' age the depth at which the hole is formed, t e head Z of the gage device should be adjusted on the standard is according to the scale of graduations produced thereon, and when the-predetermined depth.

has been reached the lugs b will strike the fork o and further downward movement of the bit will be prevented. -At the same time the operator will be warned that the limit has been reached and may then reverse the operation of the bit, withdrawing it from the wood or other work.

Having thus described the preferred form of the invention, what I claim as new,and desire to secure by Letters Patent, is

1. In a device of the class described, the

IIO

r combination of a base, a tool-carrying means the combination of a base, a tool-carrying means, having guided movement toward and rods movable from the ,base at a fixed angle thereto, springs normally holding said tool-carrying means away from the base, and a gage supported from the base, and adapted to limit the movement of the tool toward the base.

3. In a device of. the class described, the combination of a base having a central open ing therein, tubular standards attached to the base at opposite sides of the opening,

in the tubular standards, expansive springs arranged in the standards and engagingl the rods, a cross-piece rigidly connecting t e rods and adapted to be enaged by a tool, a gage-rod rising from the ase and a gage adjustable on the gage-rod and adapted to be engaged by the tool.

4. In a device of the class described, the

combination of a base, telescopic standards mounted thereon, a cross-piece connecting the movable members of the standards, a boring-tool having its stock mounted to turn in the crossiece, a gage-rod secured to the base, anda ead adjustable on the gage-rod and carrying a fork adapted to be engaged by the lower end of the stock.

5. In a device ofsthe class described, the 3 5 combination of a base, having an opening therein, tubular standards attached to the base at opposite sides of the opening, rods movable in the tubular standards, s rings arranged in the standards andnorma l'y PI'eSSv 4o ing the rods upward, across-piece r1 'dly connecting the rods at their upper on s, a

' brace having its stock moi-mated to-turn in the said cross-piece, the-said stock being adapted to carry a bit and having projecting lugs: at

its" lower end, and an adjustable g e ada- .ted to be engaged bysaid 110% illnemovement of the bit.

6. In a device of the class described, the combination of a base, tool-carrying means having. guided movement toward and from the base, a gage-rod attached to the base, a head adjustable onthe gage-rod,f1and a fork having a shank adj-ustably secured to the head and adapted to limit the m 'vement oil? the tool.

In testimony whereof I have signed nay name to this specification in the pne'sencewofi two subscribing witnesses. v

Witnesses:

ISAAC B. Owens, JNo. M. RITTER. 

